Professional and Linguistic Assessments Board (PLAB) Practice Exam

What defines impaired fasting glucose levels?

1. More than 5 but less than 6

2. More than 6 but less than 7

3. More than 7 but less than 8

4. 7 and above

The correct answer is: More than 6 but less than 7

Impaired fasting glucose levels are defined by measurements of fasting blood glucose that fall within a specific range indicating an elevated risk for developing diabetes. In this context, a fasting blood glucose level that is more than 6 but less than 7 millimoles per liter (mmol/L) is classified as impaired fasting glucose. This range is indicative of insulin resistance and is a precursor stage to the development of type 2 diabetes. Patients with impaired fasting glucose often have no symptoms but are at increased risk for cardiovascular diseases and future diabetes. The designation of more than 6 and less than 7 mmol/L aligns with the diagnostic criteria established by health organizations, aiming to identify individuals who may benefit from lifestyle interventions to prevent progression to diabetes.